Fluid-pressure motor.



No. 850,108. PATBNTED APR. 9,1901. E. B. BADGOGK.

FLUID PRESSURE MOTOR.

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v 110.850.108. ,PATENTED APR. 9, 1907.1

E. B. BADGOGK.' FLUID PRESSURE MOTOR. APPLIGATIOH FILED J'ULY 7, 190 8.

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UNITED STATES PATENT OFFICE.

EDWARD BAYNES BADOOOK, OF LONDON, ENGLAND, ASSIGNOR TO THE LAMP PUMPSYNDICATE, LIMITED, OF LONDON, ENGLAND.

FLUID-PRESSURE MOTOR.

Specification of Letters Patent.

Patented April 9, 1907.

Application filed July 7.1906. Qerial No. 326,078.

To U whom, it may concern:

Be it known that I, EDWARD BAYNES BAD- COCK, a subject of the King ofGreat Britain and Ireland, residing at 7 Pembridge Orescent, London, inthe county of London, England, have invented new and usefulImprovemerits in Fluid-Pressure Motors, (for which I have madeapplication for a patent in Great Britain, N 0. 4,884, hearing dateFebruary 28, l 906,) of which the following is a specification.

This invention relates to improvements in or connected withsingle-acting fluid-pressure motors; and the object of the invention isto construct an improved and simple form of motor in which thepowerpiston is adapted to make its effective stroke under a differ enceof pressure-such, for example, as is produced by connecting one end ofthe cylinder of the motor with a generator and opening the other toexhaust, the return stroke being made after the connections with thegenerator and exhaust are cut ofl? and while the two ends of thecylinder are thrown into communication with one another, this conditionbeing maintained until the piston has nearly completed its returnstroke, when the ends of the cylinder are opened to exhaust preparatoryto again establishing the initial conditions for a continuation of thecycle of action, the actions of the motor being controlled by a valve 0fluence of gravity an the pressure fluid acting in the cycle ofoperations occurring in the motor.

One form of motor as constructed in accordance with this invention willnow be described with reference to the accompanying drawings, in whichFigure 1 is a vertical section illustrating the motor with its parts atrest and showing its application in combination with a waterpump. Fi 2is also a vertical section drawn to a arger scale, but showing the motor element alone with its parts in the position they would occupy aftercompleting its efiective stroke.

In the construction illustrated a verticallyarranged controlling-valvecasing A is connected by top and bottom distributing-ports B O with thehead'and base of a verticallyarranged cylinder D. The valve-casing isfitted with a reciprocating valve E, the form illustrated being of thepiston type, and the crating under the in valve-casing A is formed witha steam-inlet F, so located that when the controlling-valve is down, asshown in Fig. 1, the bottom port C of the cylinder will be placed incommuni cation with the steam-inlet F, and when the valve is raised itwill close the steam-inlet F and place the bottom port C in circuit withthe top port B, and so throw the head of the cylinder in directcommunication with its base. The head of the controlling-valve casing Acommunicates with a condenser G by an outlet port or passageflHfland thecontrolling-valve E is so formed that when down it places the head ofthe cylinder in communication with the condenser G by way of the ports Band H, as is shown at Fig. 1, and when the valve E is raised thisconnection is closed, as shown at Fig. 2. A valve-actuating way Jextends from the base of the controlling-valve casing A to the cylinderB, the

port J in the cylinder being located so as to be passed by thepower-piston K as it ap proaches the top of its stroke. An exhaust wayL, connecting the condenser G with the head of the cylinder D, is openedand closed by forming the piston-rod M to act as a reciprocating cut-offvalve, a port N being formed in the piston-rod at a position which willopen the exhaust to the condenser when the piston K approaches the endof its downstroke, as shown at Fig. 1. A starting-handle P may beprovided on an extension of the piston-rod M, which in the form ofconstruction illustrated is arranged to actuate the piston of anair-pump T of the condenser G, as will be hereinafter more fullyexplained. It may be noted that the base of the controlling-valve casingforms a cushioning-cylinder A and that the valve E is made with a footextension fitted with a piston E and in which a port E is formed inorder to establish a connection between the opposite sides of the pistonE, when the head of the port E is clear of the bore of the valve-casingAg ifis To start the motor when under steam, working conditions may beestablished and an initial vacuum produced in the condenser by operatingthe piston-rod M by means of the starting-handle P, and so operating thepiston of the air-pump of the condenser, or an initial vacuum in thecondenser may be produced by other means. With working conditionsestablished and the controllingvalve E and piston K in the positionsillustrated at Fig. 1 steam will pass from the port service-pipe belowand above a juncture S,

F to the base of the cylinder by the port C, while the head of thecylinder communicates with the condenser G by the port B and outlet-port II, and under the joint influence of pressure below and vacuum.above the piston will rise, its rod M immediately closing the exhaust L,and when approaching the top of its upstroke the piston K will pass thevalveactuating way J, and steam passing to the base of thecontrolling-valve casing A will cause the controlling-valve E to riseinto the position shown at Fig. 2 and close the communication betweenthe condenser and the head of the cylinder and also cut off thesteam-supply, while placing the head of the cylinder in communicationwith its base by connecting the ports B and (l, and so establish abalance of pressure above and below the piston K. The weight of thepiston and connected parts then causes the return stroke to be made, andwhen nearly completed the port N in the piston-rod places the head ofthe cylinder in communication with the condenser by opening the exhaustL, and upon a vacuum being established in the head and. base of thecylinder and also in the base of the controlling-valve casing throughits connection by the actu ating-way J the controlling-valve E will dropinto the position shown at Fig. 1 and reestablish the conditions for acontinuation of the cycle of action. In this movement the valve E willbe assisted to drop by the action of the fluid compressed in thecushioning-cylinder A when the valve made its upstroke.

It is to be understood that although gravity may preferably be takenadvantage of in making the return stroke of the powerpiston and thedownstroke of the controling-valve, yet these actions may be made orassisted under other conditions by arranging the moving parts to actagainst counter-pressure devices.

In the construction of pump illustrated in conjunction with the motor atFig. 1, R designates a service-pipe which extends down to the sourcefrom which water is to be raised and up to the place of delivery.Check-valves R, permitting a flow in the direction of the arrows, arearranged in the communicating with the head of the pumpbarrel T. Asimilar arrangement is made between the base of the condenser G and thejuncture S by means of a suction-pipe V, fitted with check-valves V,arranged below and above a passage X, communicating with the base of thepump-barrel. Y designates a water-supply way fitted with a screwcontrolvalve for admitting a jet of water from the service-pipe B intothe condenser G. In action it will be noted that the base of thepump-barrel serves the purpose of an airpump and the head that of a mainsuction and delivery pump.

What I do claim as my invention, and desire to secure by Letters Patent,is-

1. A single-acting fluid-pressure motor having a cylinder fitted with apower-piston and formed with distributing-ports and a valve-actuatingway communicating with a valve-casing formed with steam inlet and outletports and fitted with a controlling valve adapted to connect the base ofthe cylinder to supply while opening the head to exhaust and to connectthe two ends of the cylinder while closing the connections to supply andexhaust, with means for exhausting the cylinder at the completion of theeffective stroke of the power-piston.

2. A single-acting fluid-pressure motor having a cylinder fitted with apower-piston and formed with distributing-ports and a valve-actuatingway communicating with a valve-casing formed with steam inlet and outletports and fitted with a controlling valve adapted to connect the base ofthe cylinder to supply while opening the head to exhaust and to connectthe two ends of the cylinder while closing the connections to sup ly andexhaust, in combination with an ex austsway at the head of the cylindercon trolled by a cut-off valve.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWVARD BAYNES BADCOCK.

Witnesses:

JOHN GILMORE, RONALD CAMPBELL.

